Why request.getParameter(

Hi all,

I want to to do upload file in my folder and that time i want to store date in my MySQL Database.

Here uploading file is working but data not store in database because my form field value gives null value.

Actually problem is i assign form field parameter value to variable then it return as null. ex. request.getParameter("demofield") gives null value

I give to form is <FORM ENCTYPE="multipart/form-data" ACTION="" METHOD="POST">

why it happen? Anybody plz help me.. i want use it my project...plz plz